Selwyn College invites applications for a Trevelyan Research Fellowship tenable from 1 October 2007 for three years. The Fellowship is for research in the Natural Sciences, Medical Sciences, Mathematics, or Engineering. Candidates must be completing, or have completed within the last three years, a Ph.D. Degree. Those already holding post-doctoral positions within the University are welcome to apply. Further particulars, and the application form, are available from the Master's Assistant, Selwyn College, Cambridge, CB3 9DQ (tel. 01223 335890, e-mail svs25@cam.ac.uk), or may be downloaded from the Selwyn College website at http://www.sel.cam.ac.uk/. The closing date for applications (five copies) is 30 October 2006.